Masteries

Offense:
21

Defense:
9

Utility:
0

Jungle path

Path:
1 Start at gromp, smite him immediately and just go for the kill. Leashes are great.

2 Blue buff is a nice second camp to visit, hit the big guy with your W and use your E to take as little damage as possible.

3 Wolf camp, levels you up to 3, from here you could already make your first gank, mid lane is the easiest one to gank and a fed midlaner makes it easier to win the game.

4 Raptors, just make sure to either kill the little one first or get the big one out of the way as quickly as you can. They can deal quite some damage so be careful. Smiting them is a good idea because you can see wards so you know when to gank.

5 Red buff is good for XP and the buff is very useful for farming and helping laners push. You could save your smite for when you start to get low because red buff heals you when smitten.

6 Krugs are the last one in your path because they take some more hits to kill and can deal quite some damage. When you smite them they give you a stun on your 6th auto attack, useful for ganks and fights.

Use:

Your midlaner will greatly appreciate it to receive a blue buff from you, feel free to farm the little ones and help the midlaner kill the big one. Also you might want to stay there for a little extra XP.

Same goes for the red buff but you can give that to your ADC as well.

The black arrows indicate the gank path, these are very basic and may not always work, best is to wait for the enemy to be past the middle of the lane and gank from behind trapping the enemy between you, your laner and the turret.

The build

First off, I'm not the best league player, I haven't even played any ranked games yet but I just love playing Jungle Jax. I usually get matched up with silver 3's in normal games (because the friends I play with are about silver 2 to 4 -ish) and I'm able to keep up fairly well with this build. The only thing you really need to know is that you have to keep and eye on your enemy team's builds and adapt. For the rest, you're basically set with this glorious lightpost swining madman. I don't know a lot about the game yet so I can't really go into much detail about how people can use the build in different ways, these are just basics. I hope it helped!